1 // Copyright (C) 2017-2018 Free Software Foundation, Inc.
2 //
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
7 // any later version.
8
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
13
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
17
18 // { dg-options "-std=gnu++17" }
19 // { dg-do compile { target c++17 } }
20
21 // PR libstdc++/78939
22
23 #include <utility>
24
25 struct A { int i, j; };
26
27 int
test01()28 test01()
29 {
30 A a{};
31 const auto [i, j] = a;
32 return i + j;
33 }
34
35 int
test02()36 test02()
37 {
38 A a{};
39 volatile auto [i, j] = a;
40 return i + j;
41 }
42
43 int
test03()44 test03()
45 {
46 A a{};
47 const volatile auto [i, j] = a;
48 return i + j;
49 }
50